Soluble bubble microneedle array layer, soluble bubble roller microneedle and preparation method thereof

The invention belongs to the technical field of transdermal drug delivery equipment, and particularly relates to a soluble bubble microneedle array layer capable of achieving rapid drug delivery, a soluble bubble roller microneedle and a preparation method of the soluble bubble roller microneedle. The soluble bubble microneedle array layer comprises a plurality of soluble bubble microneedles arranged on a needle base, each soluble bubble microneedle is provided with a needle body, each needle body comprises a bottom end and a top end which are oppositely arranged, the bottom ends are connected with the needle base, and the top ends carry medicine; wherein bubbles are contained in the needle body, so that the soluble bubble microneedle can be easily broken from the bubbles under the action of external force. The soluble bubble microneedle array layer provided by the invention is simple in preparation process and can be used for transdermal delivery of drugs. When the soluble bubble microneedle array layer is u